Serena Williams argues with umpire at U.S. Open women's final

Just seven months and seven tournaments removed from returning to competition following the birth of her first child, Williams was back at her ruthless best and needed just 66 minutes to beat the 19th seeded Latvian and reach her 31st Grand Slam final.

If Naomi Osaka is to lose tonight against Serena Williams, she'll only have herself to blame.

After the match, Williams posted this beautifully wholesome post to her Instagram with the caption: "Did Momma win?".

Welcome to Flushing Meadows, New York, for 2016's final Grand Slam - the US Open.

Williams hasn't won the U.S. Open since 2014 and hasn't won anywhere since the 2017 Australian Open, when while pregnant she became the oldest Grand Slam female champion at 35.

Keys subsequently missed six break points in a hard-fought second game in the next set and, after seeing off a 13th break point for a 5-3 lead, Osaka served out the final game to claim victory. She said, "This is going to sound really bad, but I was just thinking I really want to play Serena".

Her overriding aim as she served for the match, Osaka said, was "Don't double fault".

"She has the potential to grab a broad base of fans - and inspire young women - from America, Japan, the Caribbean, pretty much everywhere tennis is played".

But with six titles in NY she needs just one more to surpass Chris Evert for most all-time - and she needs just one more Grand Slam title to equal Australian Margaret Court's all-time record of 24. "I'm sure it's different, finals and semis, but I hope she can enjoy it and play a good level". She shouldn't be afraid to get into longer rallies - that's where she can use her youth to her advantage - but she also shouldn't cower at the thought of making aggressive plays to end points quickly with her booming forehand.

Williams then called for the tournament referee, remonstrating in tears, saying "this is not fair, this has happened to me too many times".

The US Open 2018, Serena Williams vs Naomi Osaka Final match will be shown live on Star Network.

"A year ago I was fighting for my life in the hospital after I had the baby", added Williams, who battled life threatening blood clots after a hard delivery.